Search Results - "Schumm, B.A."
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Development of diamond-based diagnostics for next-generation XFELs
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-12-2023)“…The composition and performance of three different diamond sensor based pass-through diagnostics are presented. A position-sensitive quadrant sensor was…”
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Use of “LGAD” ultra-fast silicon detectors for time-resolved low-keV X-ray science
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-04-2019)“…The recent development of silicon diode Low Gain Avalanche Detectors (LGADs) has opened the possibility of enhanced response and faster frame rates for the…”
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Observation of the Decay $B^{-} \rightarrow D_{s}^{()+} K^{-} \ell^{-} \bar{\nu}_{\ell}
Published in Physical review letters (2011)“…We report the observation of the decay $B^{-} \rightarrow D^{(*)+}_{s} K^{-} \ell^{-} \bar{\nu}_{\ell}$ based on $342 \mathrm {\,fb}^{-1}}$ of data collected…”
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Measurement of D0-antiD0 mixing parameters using D0 -> K0S pi+ pi- and D0 -> KS0 K+ K- decays
Published in Physical review letters (2010)“…We report a direct measurement of $D^0-overline{D}^0$ mixing parameters through a time-dependent amplitude analysis of the Dalitz plots of $D^0 \rightarrow…”
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Evidence for direct CP violation in the measurement of the CKM angle gamma with B-+ --> D() K()-+ decays
Published in Physical review letters (2010)“…We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle $\gamma$ through a Dalitz plot analysis of neutral $D$ meson decays to $K_S^0…”
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Measurements of Charged Current Lepton Universality and $|V_{us}|$ using Tau Lepton Decays to $e^- \bar{\nu}_e \nu_\tau$, $\mu^- \bar{\nu}_\mu \nu_\tau$, $\pi^- \nu_\tau$ and $\K^- \nu_\tau
Published in Physical review letters (2010)“…Using 467 $fb^{-1}$ of $e^+e^-$ annihilation data collected with the BaBar detector, we measure $\frac{{\cal{B}}(\tau^- \to \mu^- \bar{\nu}_\mu…”
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Measurement of |V_cb| and the Form-Factor Slope in Bbar -> D l- nubar Decays in Events Tagged by a Fully Reconstructed B Meson
Published in Physical review letters (2010)“…We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V_cb| and the form-factor slope rho^2 in Bbar -> Dl- nubar decays based on 460…”
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Search for Second-Class Currents in tau- -> omega.pi-.nu_tau
Published in Physical review letters (22-04-2009)“…We report an analysis of tau- decaying into omega.pi-.nu_tau with omega -> pi+pi-pi0 using a data sample containing nearly 320 million tau pairs collected with…”
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Measurement of $B \to X \gamma$ Decays and Determination of $|V_{td}/V_{ts}
Published in Physical review letters (2009)“…Using a sample of 383 million $B\bar{B}$ events collected by the $BaBar$ experiment, we measure sums of seven exclusive final states $B\to X_{d(s)}\gamma$,…”
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Improved limits on lepton-flavor violating tau decays to l phi, l rho, l K and l Kbar
Published in Physical review letters (2009)“…We search for the neutrinoless, lepton-flavor-violating tau decays tau -> l V^0, where l is an electron or muon and V^0 is a vector meson reconstructed as phi…”
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Measurement of D0-D0bar mixing from a time-dependent amplitude analysis of D0 -> K+ pi- pi0 decays
Published in Physical review letters (2009)“…We present evidence of $D^0$-$\bar{D^0}$ mixing using a time-dependent amplitude analysis of the decay D0->K+pi-pi0 in a data sample of 384 fb^-1 collected…”
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Measurement of the e+e- --> b anti-b cross section between sqrt(S)=10.54 and 11.20 GeV
Published in Physical review letters (2009)“…We report e+e- --> b anti-b cross section measurements by the BABAR experiment performed during an energy scan in the range of 10.54 to 11.20 GeV at the PEP-II…”
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Evidence for X(3872) --> psi(2S) gamma in B+/- --> X(3872) K+/- decays, and a study of B --> ccbar gamma K
Published in Physical review letters (2009)“…In a search for B --> ccbar gamma K decays with the BaBar detector, where ccbar includes J/psi and psi(2S), and K includes K+, Ks, and K*(892), we find…”
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A Search for Invisible Decays of the Upsilon(1S)Knoepfel
Published in Physical review letters (2009)“…We search for invisible decays of the Upsilon(1S) meson using a sample of 91.4 x 10^{6} Upsilon(3S) mesons collected at the BaBar/PEP-II B-factory. We select…”
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Search for a low-mass Higgs boson in Y(3S)-->gamma A^0, A^0-->tau^+tau^- at BABAR
Published in Physical review letters (2009)“…We search for a light Higgs boson, $A^0$, in the radiative decay $\Upsilon(3S)\to\gamma A^0$, $A^0\to\tau^+\tau^-$, $\tau^+\to e^+\nu_e \overline{\nu}_{\tau}$…”
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Evidence for CP violation in $B^0 \to J/\Psi \pi^0$ decays
Published in Physical review letters (2008)“…We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on 466 million Y(4S)->BBbar events collected…”
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Observation of the Semileptonic Decays $B \to D \tau \bar\nu$ and Evidence for B $\to$ D $\tau \bar\nu
Published in Physical review letters (2008)“…We present measurements of the semileptonic decays B- --> D0 tau- nubar, B- --> D*0 tau- nubar, B0bar --> D+ tau- nubar, and B0bar --> D*+ tau- nubar, which…”
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Searches for B meson decays to phiphi, phirho, phifzero(980), and fzero(980)fzero(980) final states
Published in Physical review letters (2008)“…We present the results of searches for B decays to charmless final states involving phi, fzero(980), and charged or neutral rho mesons. The data sample…”
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Measurements of Partial Branching Fractions for $\bar{B} \to X_u \ell \bar{\nu}$ and Determination of $|V_{ub}
Published in Physical review letters (2008)“…We present partial branching fractions for inclusive charmless semileptonic B decays Bbar --> X_u ell nubar, and the determination of the CKM matrix element…”
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